Recent Posts

Pages: 1 [2] 3 4 ... 10
11
Aircooled RD Tech Help 250cc and Above / Rd250D - Charging problem…..again
« Last post by Mark the Jedi on September 23, 2022, 05:29:46 PM »
My RD250D has always struggled running on longer journeys and after a day with a multimeter and some excellent advice from this forum I decided to try replacing the regulator. I couldn’t get a new one so I bought a combined rectifier regulator from Yambits and it seemed to do the trick. I did a couple of 100 mile rides and all seemed good.

A few months later and the same problem seems to have come back.😢

The voltage across the battery is:

13.0v engine not running
13.2v at Tickover
14.7v at 3000 rpm

These readings rise to around 15.1v at 3000 rpm when I load the battery with indicators, brake light or headlight.

Short trips are ok but 10 miles in and it becomes really difficult to ride, trying to stall when I slow down for lights or when I’m sat in traffic.

Could it be a faulty rectifier/regulator or could it be something else on the bike?

I’m running a Newtronic ignition that seems to be ok but could this be the problem? I might try putting the points back on.

Any advice would be gratefully received.

Mark
12
Aircooled RD Tech Help 250cc and Above / Re: Skimming rear brake disk
« Last post by Hammer 663s on September 23, 2022, 05:17:46 PM »
It used to be common to turn these down to 5mm to reduce weight. The calipers/pads aren't powerful enough to over heat these in normal riding, and they can lose the mass w/o much risk.
13
just go for level when tang is just touching, but not compressing, spring loaded pin on needle is my advice
14
Aircooled RD Tech Help 250cc and Above / Re: cylinder re-lining. PJME or Firefox racing?
« Last post by ozmadman on September 23, 2022, 12:24:04 PM »
Chris Applebee Engineering relined one of my barrels that had a cracked liner. He did a really good job, and he also rebuilt my very rusty crank, that i thought was only good for scrap. Only problem with Chris is that you may have a bit of a wait, as he is always very busy, mostly with marine 2-strokes I think.
I agree and he is only a few miles from me BUT..  Don't say anything that may question his ability or knowledge! When I wanted my 350 barrels re-bored I tried to ask him about the correct spec and what tolerances he uses and  he basically blanked me and seemed very indignant as if I was questioning his ability.  Despite his good reputation and just being just round the corner to me I went else where to get the work done as he would not give me an answer to my question.  Also if you do visit him be prepared to take a FWD to get down the unmade road and his workshop is not the tidiest.   
15
Aircooled RD Tech Help 200cc and Below / Re: 200 dx wiring diagram
« Last post by Foordie1 on September 23, 2022, 11:20:53 AM »
Thanks for your reply. I already have that but was after a coloured one. I used to have one for my RD250 about 10 years ago (should never have got rid of it )but there doesn’t seem to be a coloured one for rd200 as far as I can find
16
Aircooled RD Tech Help 200cc and Below / Re: 200 dx wiring diagram
« Last post by Gr8uncleal on September 23, 2022, 10:22:11 AM »
Is this any good - it does have the colours alongside the lines?

17
Aircooled RD Tech Help 200cc and Below / Re: 1978 rd200 dx charging issue
« Last post by Gr8uncleal on September 23, 2022, 10:19:34 AM »
Been while since I could get back to this. Anyway followed the Yamaha procedure. Cleaned contacts and adjusted all relay settings and points gap. Adjusted voltage adjusting screw. Charging  fine with about 14.5v across battery. Thanks for all of your help and advice.

 ;)
18
Aircooled RD Tech Help 200cc and Below / Re: 1978 rd200 dx charging issue
« Last post by Foordie1 on September 23, 2022, 10:05:24 AM »
Been while since I could get back to this. Anyway followed the Yamaha procedure. Cleaned contacts and adjusted all relay settings and points gap. Adjusted voltage adjusting screw. Charging  fine with about 14.5v across battery. Thanks for all of your help and advice.
19
Aircooled RD Tech Help 200cc and Below / 200 dx wiring diagram
« Last post by Foordie1 on September 23, 2022, 09:50:55 AM »
Does anyone know where I can obtain a coloured wiring diagram for my RD 200 dx. I’ve looked on here and all over but can’t find one.
20
Aircooled RD Tech Help 250cc and Above / Re: Skimming rear brake disk
« Last post by Whitey on September 23, 2022, 09:19:43 AM »
I cleaned this up with a random orbital sander using 50 grit-120 then 220.
Thanks, looks lovely, I’ll give that a go.


Sent from my iPhone using Tapatalk
Pages: 1 [2] 3 4 ... 10