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Other ATV\'s => Other ATV's => Topic started by: jcs003 on November 14, 2017, 05:32:40 AM

Title: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 14, 2017, 05:32:40 AM
I am building a gasgas 250 powered hybrid in a doug roll chassis.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 14, 2017, 05:34:21 AM
Swinger
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 14, 2017, 05:35:10 AM
more
Title: Re: Roll design - gasgas 250 hybrid
Post by: hickwheeler on November 14, 2017, 02:22:20 PM
Very interesting build. Curious as to why the gas gas motor
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 15, 2017, 04:57:33 AM
I was looking for a big bore two stroke and couldn't find what i wanted in a reasonable price range.  I expanded my search and found this at an excellent price.  it is basically the same engine in the gasgas 300 wild but at 250cc.

also, a 250r pipe will work on it so, that saves that agervation.
Title: Re: Roll design - gasgas 250 hybrid
Post by: dp250r on November 15, 2017, 11:11:24 AM
Cool build.Is that intake the same 6 bolt pattern as the Honda.
Title: Re: Roll design - gasgas 250 hybrid
Post by: hickwheeler on November 15, 2017, 02:23:33 PM
I was just curious. I have rode a 300 bike before. They have a nice power delivery.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 25, 2017, 09:39:44 AM
Cool build.Is that intake the same 6 bolt pattern as the Honda.

yes.  it is the same bolt pattern as the 250r.  I found that interesting.  the engine weights about 20 lbs too.  the best part is the 50 hp stock.
Title: Re: Roll design - gasgas 250 hybrid
Post by: dp250r on November 27, 2017, 07:23:06 AM
Cant wait to see more. I would like one of these motors for my 85 atc.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 28, 2017, 08:32:08 AM
motor mount designed.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 29, 2017, 06:34:15 AM
mock up:
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 29, 2017, 06:35:35 AM
...
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 29, 2017, 06:36:11 AM
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Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 29, 2017, 06:36:54 AM
...
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 29, 2017, 06:37:34 AM
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Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 29, 2017, 06:38:11 AM
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Title: Re: Roll design - gasgas 250 hybrid
Post by: hickwheeler on November 29, 2017, 02:23:15 PM
Looks like kick starter is going to be an issue. To bad it wasn't one with electric start
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on November 29, 2017, 03:41:33 PM
Looks like kick starter is going to be an issue. To bad it wasn't one with electric start

you are correct. I have a few ideas, if I am unsuccessful, there is an electric start kit.  It is expensive though.
Title: Re: Roll design - gasgas 250 hybrid
Post by: hickwheeler on November 29, 2017, 06:19:09 PM
Still going to be cool however you do it
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on February 26, 2018, 02:08:42 PM
some parts back from powder coat:
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on February 26, 2018, 02:10:27 PM
...
Title: Re: Roll design - gasgas 250 hybrid
Post by: hickwheeler on February 26, 2018, 02:51:03 PM
Parts pile is looking good John
Title: Re: Roll design - gasgas 250 hybrid
Post by: Tbone07 on February 26, 2018, 04:19:46 PM
The hammer-tone paint on the gull-wing swinger looks killer. Well done sir.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on February 27, 2018, 04:48:44 AM
thanks guys.  i found someone who does the silver-vein PC the way it should be done.  some more pics of misc., parts.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 05, 2018, 06:14:47 AM
here is the front motor mounts test fit.  the white one is the 3d printed prototype.  the other side with the offset did not work, so i used a yfz mount to use to establish offset.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 12, 2018, 08:15:21 AM
here a fender install tease.  still a while away from the official install.  Plus I got the boy doing the wrenching.haha
Title: Re: Roll design - gasgas 250 hybrid
Post by: Tbone07 on March 13, 2018, 03:58:02 PM
Very nice! Good to see the young buck getting involved.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 14, 2018, 04:25:03 AM
Very nice! Good to see the young buck getting involved.

not a bad start.  he isn't even 3 years old yet
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 14, 2018, 04:29:12 AM
chain alignment was a success.  no mods needed.
Title: Re: Roll design - gasgas 250 hybrid
Post by: DOUGLAS on March 17, 2018, 04:57:15 AM
is this a stock motor ? what shocks are those they look like yfz ?
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 17, 2018, 02:36:55 PM
that is a gasgas 250ec. those are yfz shocks, shortened for this chassis.
Title: Re: Roll design - gasgas 250 hybrid
Post by: Skeans1 on March 17, 2018, 09:13:17 PM
Looks good Jon excited to see it up and running in the near future.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 18, 2018, 07:34:26 AM
Thanks jared!
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 19, 2018, 10:52:06 AM
Just ordered this:  https://www.ktm-parts.com/EE855002510.html

damn my wallet is hurting.  especially since there are parts I do not need.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 30, 2018, 02:35:52 PM
ESR pipe test fit:
Title: Re: Roll design - gasgas 250 hybrid
Post by: hickwheeler on March 30, 2018, 02:43:55 PM
I really like this build
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on March 30, 2018, 02:59:40 PM
thanks gene!

I will send this to doug roll when it is complete, since he never got back to me about buying the titanium a arms designed for this frame.  it might be because i bad mouthed elka.  i think elka sucks.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on April 06, 2018, 07:15:30 AM
Some sub assembly complete.  Front hubs rebuilt with custom 3D printed dust cover, and brand new calipers.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on April 06, 2018, 05:31:14 PM
x-33 before and after:
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on April 18, 2018, 06:30:23 AM
here is the yz caliper modified and with fresh PC.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on May 09, 2018, 09:23:56 AM
the header section of the pipe modified to meet the engine specs.  This is the 250r pipe i got used, and will use it on this.  I will test fit and get welded.
Title: Re: Roll design - gasgas 250 hybrid
Post by: jcs003 on May 09, 2018, 09:24:31 AM
another
Title: Re: Roll design - gasgas 250 hybrid
Post by: Michael88R on May 18, 2018, 01:04:24 AM
thanks gene!

I will send this to doug roll when it is complete, since he never got back to me about buying the titanium a arms designed for this frame.  it might be because i bad mouthed elka.  i think elka sucks.

I think Elka sucks too, but there’s a difference between Roll/Elka and just plain Elka.  Just tell Doug how awesome his chassis and components are.  Toot his horn. Btw, Jed can help a lot too.  They pulled a miracle for me getting me a lobo swingarm before my Glamis trip last January, and I didn’t even buy any Elka shocks from them.  Motowoz!!!