Mongoose Cx's!!! fun

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diggler   1 kW

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Mongoose Cx's!!! fun

Post by diggler » Jan 19 2016 10:53am

Picked a couple these up.
One will have the bht big block prob 12fet infineon and the other I'll keep the 450w in it with a 48v 1000w 26a 54v max brushed controller I found for 18 bucks till I burn them both out or get board.

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

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gogo   10 MW

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Re: Mongoose Cx's!!! fun

Post by gogo » Jan 19 2016 11:07am

Yes, the concept of a mid-motor mounted on the swingarm has many virtues. The CX is stout except for the forks, which are weak.

I'm surprised there aren't aftermarket swingarms available for the standard bearing mount found on so many MTBs. My plan is to mount the CX swingarm on a MTB frame that has acceptable forks.
"A conclusion is the place where you got tired of thinking." -Steven Wright

allinv   10 mW

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Re: Mongoose Cx's!!! fun

Post by allinv » Jan 19 2016 9:36pm

gogo wrote:Yes, the concept of a mid-motor mounted on the swingarm has many virtues. The CX is stout except for the forks, which are weak.

I'm surprised there aren't aftermarket swingarms available for the standard bearing mount found on so many MTBs. My plan is to mount the CX swingarm on a MTB frame that has acceptable forks.
Yes, the forks are crap, but you can swap in any 1-1/8" steerer fork (as long as it the steerer is long enough).
And the cx frame has room for batteries (though it is heavy). Unfortunately the rear swingarm is kinda short.

Search for the "farfle swingarm" not sure if they're still available...

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 21 2016 6:44pm

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Location: Twin Cities, Minnesota, USA

Re: Mongoose Cx's!!! fun

Post by diggler » Jan 21 2016 7:24pm

I got some good pics of the inside of the box but there too big to upload.
I can take more when I take the box out and switch from the 36v pack apart to make a 48v one.
plenty of vids coming though.
maybe I can just use youtube for the picks too.
or some converter
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

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gogo   10 MW

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Re: Mongoose Cx's!!! fun

Post by gogo » Jan 21 2016 7:53pm

allinv wrote:
gogo wrote:Yes, the concept of a mid-motor mounted on the swingarm has many virtues. The CX is stout except for the forks, which are weak.

I'm surprised there aren't aftermarket swingarms available for the standard bearing mount found on so many MTBs. My plan is to mount the CX swingarm on a MTB frame that has acceptable forks.
Yes, the forks are crap, but you can swap in any 1-1/8" steerer fork (as long as it the steerer is long enough).
And the cx frame has room for batteries (though it is heavy). Unfortunately the rear swingarm is kinda short.

Search for the "farfle swingarm" not sure if they're still available...
The Farfle swingarm is specific for the Genesis frame. I think something like this CX swingarm that uses a generic pivot mount would be popular as an aftermarket item. It shouldn't cost much if sourced from Taiwan by the container load.

Diggler, I like the background tune! The stock motor is fine for lightweight riders, but the 'big-block' motor with a quiet sine-wave controller is a nice upgrade for more power.
"A conclusion is the place where you got tired of thinking." -Steven Wright

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 21 2016 8:18pm

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 21 2016 8:40pm

The stock motor is fine for lightweight riders, but the 'big-block' motor with a quiet sine-wave controller is a nice upgrade for more power.
Cool. I was pretty set on the 12 fet Infineon. Figured that was plenty of controller for the bht.
But if there is a comparable (price and amp/volt capable) progamable sine wave controller I'm in.
Did you have one in mind???

And O yeah! I love how light it is. In fact I'll have to weigh it. I bet its about 60-65lbs. Its sweet I can ride a mile to the bus stop and put it right on the rack in the front of the bus. Or they have racks in the light rail too.
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 21 2016 8:55pm

Some of those pics of the inside o da box
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 21 2016 9:18pm

some pics of the bike with the forks and rear shock and seat.
Forks were 125 used off craigslist air/oil. Guy said they didn't leak and seals were replaced 6 months ago but they leak.
Just something I wanted to learn how to do anyway, to refurbish some forks.
The rear cheepo shock was 35 I think off ebay. I get the 350lb one.
Seat 15 buck off craigslist. Ktm dirtbike seat. I'm assuming 125.
Good two inches of travel in fear shock and 120mm in front fork.
Plus the fork is super light! I almost didn't want to put the seat on because I was like this is as light as the bike will ever be.
But the seat doesn't weigh that much more.
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 21 2016 9:29pm

a vid of the bike with them forks and shock and seat. I had a video in the day on the same rout with stock parts but the cam was pointed too far down.
In the vid the spring on the rear shock was just about all the way out, since then I have put it about an inch and a half from the min.
I'm just not that tall 5' 10.5" with stubby legs. And it feels like it handles better too.
The seat is awesome though. I can actually peddle a sitting down now! Though it still needs to be a bit higher be correct for me.
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

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nutnspecial   1.21 GW

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Re: Mongoose Cx's!!! fun

Post by nutnspecial » Jan 21 2016 10:58pm

Totally awesome man!
I'd recommend 15 or 18fet if you think you might want to get the most from bht. Also, I use infineon 18fet, and the motor is quiet enough- chain and freewheel make more noise imo. I went with #35chain. Also, simply reaming and welding a sprocket on the shaft has worked great for me so far. No quick changes tho :lol:

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 12:09am

more video. I was up late when I made this so excuse me if I sound tired.
I figured out the next day I needed to just use 72v because that's what it was at and now I have brake.
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 12:47am

nutspecial wrote:Totally awesome man!
I'd recommend 15 or 18fet if you think you might want to get the most from bht. Also, I use infineon 18fet, and the motor is quiet enough- chain and freewheel make more noise imo. I went with #35chain. Also, simply reaming and welding a sprocket on the shaft has worked great for me so far. No quick changes tho :lol:
Hay thanks!
Well that's cool I already have the 18fet.

I think I'ma take the motor apart and have the shaft machined though.
I already got the motor smoken hot (it just didn't smoke) once when I was running it wrong.
I think its okay but I might as well take it apart now. :x
I might just try that trick though if I have everything ells ready.
What Size I.D. #35 did you use? 5/8 right???

I also jimmy'd a 68mm crank for the four stroke jack shaft kit to fit the 100mm BB on my fat bike gas electric.(when it worked :cry: )
So I'd like to get a rod with threaded ends and the 68mm rod (I cut in half and put a pipe and roll pin in it to hold it together) threaded so I could actually have a legit set up when I try gas electric again. right now it's all wankie.

I plan on doin the #35 to a freewheel front crank to a 5 or 7 speed rear right side gearset. Though an internal gear changer would be better.
Do they use the planetary gear system for those internal gears? There only 3 speed right? I still would use over the standard.
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 12:49am

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Joined: Mar 25 2014 12:12am
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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 12:56am

nutspecial wrote:Totally awesome man!
I'd recommend 15 or 18fet if you think you might want to get the most from bht. Also, I use infineon 18fet, and the motor is quiet enough- chain and freewheel make more noise imo. I went with #35chain. Also, simply reaming and welding a sprocket on the shaft has worked great for me so far. No quick changes tho :lol:
What kind of amps you think I could get away with at 96v to the motor? 60amp is probably plenty wouldn't you say?
Is this not 12fet territory or more like 15fet to be safe?
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 1:06am

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Posts: 308
Joined: Mar 25 2014 12:12am
Location: Twin Cities, Minnesota, USA

Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 1:49am

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Location: Twin Cities, Minnesota, USA

Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 1:59am

Can stop watching after 320. I thought I turned it off.
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Joined: Mar 25 2014 12:12am
Location: Twin Cities, Minnesota, USA

Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 2:28am

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Joined: Mar 25 2014 12:12am
Location: Twin Cities, Minnesota, USA

Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 2:50am

Haha roomie


Here is the real video.
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

evolutiongts   10 kW

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Re: Mongoose Cx's!!! fun

Post by evolutiongts » Jan 22 2016 2:35pm

Image

Heres my mine
http://www.electricrt.com
Electric Race Technologies

Schwinn 405 2WD Track Bike 18KW
EDGE 1500W Hub / MXUS 3K Turbo
ASI BAC 2000 / BAC 4000 Bluetooth
viewtopic.php?f=6&t=93079

10Kw KMX death trike
MUXUS 3K Turbo
Sabvoton 72V150A
Moto Wheels all around
Front Suspension Kit
viewtopic.php?f=6&t=83423

Giant Trance 4 Full Suspension
Cyclone 3000W
74V 3000W
http://endless-sphere.com/forums/viewto ... =6&t=59005

diggler   1 kW

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Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 3:47pm

evolutiongts wrote:
Heres my mine
I've been lurking at yours for a min.
Okay so...
What size tire is that in the rear?
What KV is that motor? And the wattage of the motor? Link?
What are the front and rear sprocket tooth count?
Have you been happy with the zoom forks?
Is that still a 8" shock in the rear?
I like the big hydo brake in the front?
Any plans for rear brake?
Got any videos of the new motor in action?

O and can you post up a close up pic showing how you had the old bht mounted in the swing arm?
O and a close up pic of the weld job the shop did to extend the swing arm.

Thanks
GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Posts: 308
Joined: Mar 25 2014 12:12am
Location: Twin Cities, Minnesota, USA

Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 10:55pm

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

diggler   1 kW

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Posts: 308
Joined: Mar 25 2014 12:12am
Location: Twin Cities, Minnesota, USA

Re: Mongoose Cx's!!! fun

Post by diggler » Jan 22 2016 11:48pm

GAS ELECTRIC FAT BIKE 49CC/3000W MXUS V1 18s Lipo 18 Fet BUILDING...http://endless-sphere.com/forums/viewto ... =6&t=65638
600W CAPACITIVE SPOT WELDER BUILDING... http://endless-sphere.com/forums/viewto ... =2&t=66466
HOLANDIA BEACH CRUSER 1000W 9C ?TURN REBUILDING... no thread yet.
Next project will be 18" Iron Horse hard tail mid drive

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