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Post by jimarillo on Jul 11, 2019 10:06:50 GMT 1
New to the RD500 ownership world. Ridden mine a few times and of course I love it. Just wondering if it's set up correctly. Mine pulls like a train in 1st 2nd and 3rd from 4k ish up to about 10k then has nothing. Never grinned so much on a bike  Does that sound about right for a standard engine? |
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Post by 4l04ever on Jul 11, 2019 13:04:16 GMT 1
You can get it checked on a dyno with a gas analyser. Where are you based?
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richb
Thrash Merchant
Posts: 355
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Post by richb on Jul 11, 2019 13:41:43 GMT 1
In standard form they do not overly rev they do drop off around 9.5k so sounds about right, will rev more with after market pipes and some tuning if that's what you want. Do a compression test to check all okay and check carbs are properly synched.
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Deleted
Deleted Member
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Post by Deleted on Jul 11, 2019 14:15:10 GMT 1
Older 2 strokes never really reved beyond 10k. RG500s are safe to 10,500, Think back to the older GT750 and it was redlined at 8,500 IIRC. These thing do need treating with some mechanical sympathy not like some rev crazy 4T 4 pot thingy that needs 12,000 rpm before they start making proper power.
Enjoy it for what it is, a 35 year old design. Plus the faster you go the more you realise how cr@p the brake are and how rubbish the frame and suspension is !!!!
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Post by copper99 on Jul 11, 2019 14:15:32 GMT 1
New to the RD500 ownership world. Ridden mine a few times and of course I love it. Just wondering if it's set up correctly. Mine pulls like a train in 1st 2nd and 3rd from 4k ish up to about 10k then has nothing. Never grinned so much on a bike Does that sound about right for a standard engine? Are you saying it doesnt rev out in 5th or 6th but only in the lower gears? 6th is very tall anyway. As said, a dyno is the only sure fire way to be sure, sounds like you haven't any evidence of recent spanner work so would be worth getting it checked out. |
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rd84
Drag-strip hero
Posts: 276 
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Post by rd84 on Jul 11, 2019 14:51:45 GMT 1
Hi,
My 1984 47x model revs out in all the gears - takes a while in 6th gear - not something I do nowadays though ! 😄
Cheers
Paul
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Post by tacky1 on Jul 11, 2019 20:20:55 GMT 1
It should rev out in all gears. Do a compression check to make sure it’s all good. A good set of pipes really let the 500 breathe.
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Post by 2banger on Jul 11, 2019 21:07:28 GMT 1
From memory dry weight was the wrong side of 200kg , a good one should see 65-70rwhp
just enjoy the experience of owning 4cylinder 2stroke
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Post by jackjabba on Jul 12, 2019 10:47:33 GMT 1
Jimarillo, wasn't that one of the guys from Fast Bikes back in the day.
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Post by jimarillo on Jul 12, 2019 19:38:46 GMT 1
I didn't get to 5th and 6th much but imagine they are similar. It's been well sorted engine and carbs... and it's a special so had decent suspension and brakes should I need it I have little to compare it to so just asking not moaning about it. |
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Post by stusco on Jul 12, 2019 20:07:23 GMT 1
I didn't get to 5th and 6th much but imagine they are similar. It's been well sorted engine and carbs... and it's a special so had decent suspension and brakes should I need it I have little to compare it to so just asking not moaning about it. We will be needing photos |
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Post by copper99 on Jul 12, 2019 22:10:47 GMT 1
From memory dry weight was the wrong side of 200kg , a good one should see 65-70rwhp just enjoy the experience of owning 4cylinder 2stroke Not quite, wet is around 200kg and they should make around 75BHP at the wheel, mine made 80BHP on the Projex dyno after some set up(no tunning) , does 150 on the clock and according to my GPS a true 143MPH. |
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Post by jimarillo on Jul 13, 2019 0:17:44 GMT 1
Search for Regis Laconi YZR500 RD500 and you'll find it. It's been upgraded to a Garry McCoy rep now |
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rd84
Drag-strip hero
Posts: 276
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Post by rd84 on Jul 16, 2019 20:10:16 GMT 1
Just did the VMCC at Mallory Park - with everything standard except TSA pipes and jetting my RD500 1GE was revving past an indicated 12000rpm in the lower gears - not that I intentionally did that of course - even trying to be careful it was going to 11000rpm very rapidly - anyway the bike is off to Dave at Muttsnuts for an Ignitech CDI/YPVS to be fitted and set up - I’ve asked him to set a safe rpm limit to prevent any future engine damage 😃
Sadly my bike had a front tyre issue at Mallory that stopped me enjoying the handling - still a great couple of days though.
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Post by 2banger on Jul 18, 2019 19:00:10 GMT 1
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