engines

jimjim · #1 01-26-2013, 07:55 PM

Does anyone know if the same 300cc engine were used in the gasgas quad are the same as the bike or is the quad engine counter-balanced?Thanks.

djroggen · #2 01-26-2013, 10:31 PM

Quad engines are counter balanced.

Jim Cook · #3 02-07-2013, 10:37 AM

Quote:

Originally Posted by djroggen

Quad engines are counter balanced.

And will fit right in the bike frame.

farmerj · #4 02-07-2013, 10:38 PM

I've heard it said to find one without reverse. What is the reason? Do they have a funky shift pattern or something?

Jeff

twowheels · #5 02-08-2013, 01:11 AM

Quote:

Originally Posted by farmerj

I've heard it said to find one without reverse. What is the reason? Do they have a funky shift pattern or something?

Jeff

Why would you want reverse on a bike??? /jk

nambo-trev · #6 02-08-2013, 06:07 AM

Quote:

Originally Posted by twowheels

Why would you want reverse on a bike??? /jk

Man did I laugh when I read this! I wondered the same thing, it's hard enough going forward never mind backward lol

farmerj · #7 02-08-2013, 08:48 AM

Wow, if it appeared that I could use a reverse gear on my DE 300 you guys are really over the top in affirming my riding skills!

I feel good about that, but think I would need to spend some more time on trials bike trick riding first! Like 10 years or so!

I've had some conversation with Jim Cook about dropping a quad engine in an enduro frame, a good way to get a CB'ed 300 engine. But some of the quads had a reverse, so you'd have to go with an earlier model to get a quad engine without it. Just wondering why you couldn't use the quad engine even if there is a reverse gear.

I suppose you wouldn't want to accidentally bump the shifter the wrong way on a 6th gear fireroad

!

Jeff

modette · #8 02-08-2013, 11:45 AM

Quote:

Originally Posted by twowheels

Why would you want reverse on a bike??? /jk

Change that to light bike...LOL A reverse on my XR650R would be handy when on single track...LOL

Jim Cook · #9 02-08-2013, 12:35 PM

The reverse that some of the GasGas quads use has nothing to do with the transmission. Rather, it is the ignition, which, when the reverse is activated, actually causes the engine to run backwards when started.
This is accompanied with a rev limiter, which keeps the quad from going too fast in reverse.

The concept for this reverse system was particularly easy for me to grasp, because of my prior experience with my second bike as a teenager. The bike was a 1965 "Harley Davidson M-65 Sport"; a small piston port 65cc 2-stroke made in Italy for Harley.
The port timing and ignition timing was so close that I was able to put the bike in gear and push (bump) start it backwards.
I would do this for fun, and stand astride the little bike while it was idling for a bit; until I had an unsuspecting audience. Then I would rev it up and dump the clutch; spinning gravel on whoever was standing in front of me. Damn, I thought that was funny. :-)

I would not want the quad ignition with the reverse on a dirt bike, but I think that such an engine would accept a standard bike ignition. I would also want a bike's black box to go along with any quad engine installed on a bike. If my memory serves me correctly, the case was different on the quads with the reverse ability (on the ignition side).

Reggie is currently building a project race bike, using a counterbalanced '98 EC250 engine, which he is installing into a 2005 GasGas frame.

gasgasman · #10 02-08-2013, 02:54 PM

Quote:

Originally Posted by Jim Cook

Reggie is currently building a project race bike, using a counterbalanced '98 EC250 engine, which he is installing into a 2005 GasGas frame.

How's Reggie doing?
He is one of the nicest people I have ever met.

Tell him I said hi.