Search found 59 matches
- Wed Feb 28, 2024 12:22 pm
- Forum: For sale/wanted - Parts, and those bits and bobs
- Topic: Inlet valve wanted for 1929 OHV Model F 'Black Ariel'
- Replies: 10
- Views: 779
Inlet valve wanted for 1929 OHV Model F 'Black Ariel'
Hi all My valves are the later ones, as sold by Draganfly, and are 1/8" too long. This messes up the valve gear geometry and has caused problems. I've managed to track down a new replacement exhaust valve, but still looking for an inlet. The club spares might have some, but the Singles section ...
- Sun Jul 04, 2021 8:58 pm
- Forum: Four stroke
- Topic: Monoblock settings on a VH500
- Replies: 9
- Views: 1410
Re: Monoblock settings on a VH500
quote="simon.holyfield"] Do you know that the needle and needle jet are not worn?[/quote] Nope, no idea and don't know how to check. It was improved by increasing the slide cutaway, so I'm getting there. If fitting the correct main jet doesn't help, I'll then replace all the jets and slide...
- Sat Jul 03, 2021 4:36 pm
- Forum: Four stroke
- Topic: Monoblock settings on a VH500
- Replies: 9
- Views: 1410
Re: Monoblock settings on a VH500
The needle has no markings on it other than a 'D' at the top above the top groove. Is this the correct needle I wonder? More research to do...
- Sat Jul 03, 2021 4:09 pm
- Forum: Four stroke
- Topic: Monoblock settings on a VH500
- Replies: 9
- Views: 1410
Re: Monoblock settings on a VH500
Next stage will be to reduce the main jet from 250 to 200 (not much effect low down though) and take a bit more off of the slide.
- Sat Jul 03, 2021 4:07 pm
- Forum: Four stroke
- Topic: Monoblock settings on a VH500
- Replies: 9
- Views: 1410
Re: Monoblock settings on a VH500
OK, plenty of fiddling today. New B6HS plug fitted. Starting & running OK, but too rich still. I "converted" the slide from a 3 to nearly a 3.5 by rubbing on wet & dry on a flat surface. (Stopped just short by a few thou though to do it in stages). Dropped the needle down - clip in...
- Sat Jul 03, 2021 7:05 am
- Forum: Four stroke
- Topic: Monoblock settings on a VH500
- Replies: 9
- Views: 1410
Re: Monoblock settings on a VH500
Thanks Will. The carb choke size matches the inlet tract diameter perfectly though, which is surprising if a smaller carb is 'correct'. I do know from my racing past though that big carbs don't always make for faster lap times. Thanks for the feedback guys - I'll have a fiddle today. I think a bigge...
- Fri Jul 02, 2021 6:27 pm
- Forum: Four stroke
- Topic: Monoblock settings on a VH500
- Replies: 9
- Views: 1410
Monoblock settings on a VH500
Hi all My W/NG framed 500 trials had a monoblock carb on when I bought it in a non-running state. It is a 389/30 carb with the following settings: Pilot jet: 30 Needle jet: 106 Main jet: 250 Slide Number: 3 Although the bike starts and runs well, it seems really rich low down. The plug has lovely sa...
- Fri Jun 11, 2021 6:27 pm
- Forum: Ariel Talk
- Topic: Amal Concentric on a VH500 - settings?
- Replies: 6
- Views: 1206
Re: Amal Concentric on a VH500 - settings?
Thank you Michael - really useful information.
Adrian
Adrian
- Fri Jun 11, 2021 10:10 am
- Forum: Ariel Talk
- Topic: Amal Concentric on a VH500 - settings?
- Replies: 6
- Views: 1206
Re: Amal Concentric on a VH500 - settings?
Burlen say the 2-stroke and 4-stroke bodies are different and not interchangeable. http://amalcarb.co.uk/rebuilding-mark-1-concentric-carburetter The spray tubes are different, but if you have the kit to sort that out, you might be able to work out something from their specs for a VH monobloc. SG T...
- Thu Jun 10, 2021 9:13 pm
- Forum: Ariel Talk
- Topic: Amal Concentric on a VH500 - settings?
- Replies: 6
- Views: 1206
Re: Amal Concentric on a VH500 - settings?
hi surrey cycles done the jets for my concentric carbs for my ariels he knows is carbs and i have no problems with my carbs he is very good i get my carb parts and carbs off him when i go to kempton park shows or jumbles give him a ring on 01342 716120 he will help you That is very useful - Thank y...