As said previously, what are ya putting in what? Most things are possible, it just comes down to how far you're willing to go.....
Drew for Prime Minister!
www.oldskoolperformance.com
www.prospeedmc.com for parts ex U.S.A ( He's a Kiwi! )
aha has anyone put an rg50 in a fxr frame ?????
![]()
"Instructions are just the manufacturers opinion on how to install it" Tim Taylor of "Tool Time"
“Saying what we think gives us a wider conversational range than saying what we know.” - Cullen Hightower
"Instructions are just the manufacturers opinion on how to install it" Tim Taylor of "Tool Time"
“Saying what we think gives us a wider conversational range than saying what we know.” - Cullen Hightower
I've done a few replants, great fun. Before you spend any money measure up, plan it out in your head especially the engine mounts, and exhaust if it's a 2 stroke the exhaust is really important.
As said before alignment of rear wheel sprocket and engine sprocket is probably the most critical consideration.
Tell us what you want to fit into what, someones almost certain to have tried it.
I'm doing a ER125 in a CR85 frame and the swinging arm bolt is the same diameter as the engine that makes it very easy to mount but lowering the bike could be tricky, has anyone cut upside down forkes ?
Right. I guess I should have mentiond that at first. I'm looking at putting an fxr motor into an rg250 frame, so I'm pretty sure it would fit.
I dont have a welder. has anyone payed to have it done?
Is it an early RG250? Good luck, you'll need to cut and modify the frame to fit, the motor doesn't appear to fit without cutting the frame.
One thing you want to look at is being able to strip the top end and barrel with the crankcase still in the frame.
We had to machine some of the cylinder fins off the top end of the Luncheon engine to slide it out the top. Not really ideal !!
"...you meet the weirdest people riding a Guzzi !!..."
Sometimes you will be lucky and some engines from the same manufacturer will use common crankcases. For an example (stepping outside of buckets here), Honda used the same bottom end for some of their road and trail bikes. I had a XBR500RS Mutant which was a CB250RS with an XL or XR 500 donk. The lower mounts all lined up, but obviously the barrel was much bigger, so the top mount had to be cut off the engine (better than cutting the upper frame tube!) and the gas tank had to be "cut'n'shut". It meant though that there was precious little room around the engine, so the carb was rather squished and had to run a different intake manifold (shorter) and airfilter.
As for lining the sprockets up: while it's the ideal, sometimes it's better to get the engine sitting in the right place and use spacers to line the sprockets up (if they're only a few mm off being in line).
... and that's what I think.
Or summat.
Or maybe not...
Dunno really....![]()
Is your RG frame aluminium or steel. Easy to weld brackets and mounts to steel, bit harder if the frame is aluminium.
I fitted a FXR motor into a Yamaha Deltabox frame which worked very nicely. I don't know about anyone else but it takes me quite a while to design, fabricate and fit engine mounts, to pay someone may be rather costly. Got any welder mates who can help ??
The RG250 frame is aluminium, and being a two stroke twin, the upper area is alot more cramped than a deltabox frame designed for a four cylinder four stroke. Also is it the RG250 rolling chassis you are bidding on, on Trade Me? The 16" front wheel isnt ideal either, may struggle to find some decent rubber.
There are currently 1 users browsing this thread. (0 members and 1 guests)
Bookmarks