2strokeworld

The 2-Stroke Garage => Show Off => Topic started by: Czakky on February 13, 2020, 08:04:45 PM

Title: My R5
Post by: Czakky on February 13, 2020, 08:04:45 PM
I’m coming down the home stretch on this project. I bought it three years ago or so it was a slightly neglected, but nice R5. It surprised me with a 6-speed transmission and early RD cases, later 7(?) plate clutch, R5 ignition and RD crank. With the R5 top end on its first bore (.25mm).
I’ve been playing with this bike a bunch and learned a lot about two strokes in general in the last few years.
Then I bought a stage 2 RD350 Dr. Chuck top end off this forum and tucked the bike into my basement to keep me busy. Chuck (and many other) helped a bunch with getting the old girl setup and I ended up going with an RD400 trans, TM32 flat slides, HPI ignition, Spec2 Classics, XS-1 front drum laced to an R5 rim, fresh Supertune crank and a bunch of other crap I’m sure.
I can’t wait for spring unfortunately it’s like 0 out right now...
Title: Re: My R5
Post by: Jspooner on February 13, 2020, 08:24:53 PM
Looks like a sleeper. I like the look.  :nana:
Title: Re: My R5
Post by: Oil Burner on February 13, 2020, 08:51:46 PM
Love the transformation! Your gonna love the new top end. It should be an absolute ripper! I can’t imagine, my stage 1 supertune rips so you’re should be nuts. I’m gonna have to read up on that front drum, I like it.
Title: Re: My R5
Post by: paul1478 on February 14, 2020, 07:18:20 AM
Wow, first it looks GREAT and as already said, you going to LOVE that new stage 2 from Chuck!
Title: Re: My R5
Post by: suey1958 on February 14, 2020, 09:05:07 AM
Thats a FINE looking machine ! Great Job   :clap:
Title: Re: My R5
Post by: m in sc on February 14, 2020, 10:03:35 AM
agreed, its fantastic. when barney finally needs a rebuild, this is inspiring.  :toot:
Title: Re: My R5
Post by: Czakky on February 14, 2020, 10:09:43 AM
Thanks guys, I’m definitely going for the sleeper look. As long as you don’t spot the flat slides...
Title: Re: My R5
Post by: Evans Ward on February 14, 2020, 06:45:55 PM
Nice! Love a sleeper!  :whoop:
Title: Re: My R5
Post by: Kawtriplefreak on February 14, 2020, 09:40:41 PM
Beautiful work!!!
Title: Re: My R5
Post by: Organicjedi on February 15, 2020, 03:51:54 PM
Does the stock throttle work with the TM32s?
Title: Re: My R5
Post by: Czakky on February 15, 2020, 05:08:57 PM
Chuck made it happen, originally he didn’t think he had enough ratio. Not sure if he had to modify the throttle but it’s got a nice light pull.
Title: Re: My R5
Post by: Twintuned on February 17, 2020, 12:35:48 PM
Very nice and clean. Good combination of parts to make a fast bike.
Title: Re: My R5
Post by: Oil Burner on February 21, 2020, 09:29:09 PM
Have you done anything with your stock clutch and brake levers? The ones on my r5 are old, crusty and floppy. I wouldn’t mind upgrading to something more modern but don’t know what the go to is. The drum front kinda throws a wrench in it.
Title: Re: My R5
Post by: Czakky on February 23, 2020, 08:48:02 PM
@Twintuned. Thanks

@Oil Burner. You can buy cheapo levers and OEM bushings still. Obviously you can tighten up at the lever perch though.

Title: Re: My R5
Post by: Czakky on February 23, 2020, 08:56:32 PM
I got to take this thing out for a quick ride today. Holy lord! Just a couple quick break in rides and it lifts the front wheel no problem in 2nd under power alone.
The salt is rinsed off and there are a few things left to do to finish this thing up. Needless to say I can’t wait! :whoop:
Title: Re: My R5
Post by: Greaser Greg on February 23, 2020, 09:54:07 PM
Do you plan on having a break-in period for the engine?
Title: Re: My R5
Post by: Czakky on February 24, 2020, 05:30:42 PM
A few high load low rpm cycles then waiting a few hundred miles before giving it high rpms.
Title: Re: My R5
Post by: m in sc on February 25, 2020, 09:56:19 AM
few hundred miles? do a bunch of short runs, recheck torque and have at it. 50 at most. you just need to seat the rings.   :burnout:
Title: Re: My R5
Post by: Czakky on March 02, 2020, 08:23:33 AM
I had a nice little shakedown run yesterday. Here’s a few things to I’ve noticed.
I’m not sure if it’s going from an R5 to RD top end or the carb change or even Chuck’s setup, but the bike is way smoother than it’s ever been. It’s no Goldwing but it’s significantly better.
There seems to be a pretty good hesitation at 6500 rpm no matter throttle position but might be worse at full throttle. I will have to check timing and I still have 50:1 in the tank mixed with a gallon of pure so there still things I need to check/rectify there.
My front brake setup is a bit unsatisfying at the moment but I still have some tweaks to get that right.
Title: Re: My R5
Post by: economan on March 02, 2020, 01:23:05 PM
Hey, where U git that Dr. stage 2 from. ?   :whistle:
I love the retro look of the front drum but yuo gonna need some mo braking power, might want to git rid of the Flinstone brakes with Doc's set up.   :umm:
LOOKS GREAT  :clap:

Title: Re: My R5
Post by: Czakky on March 02, 2020, 07:10:40 PM
Ha! Well when I weighted her she was 285lbs all full but no gas. So I feel like I eliminated some weight, plus some of us like to try to do more with less.... my wife would agree.
Title: Re: My R5
Post by: Czakky on April 06, 2020, 01:31:58 PM
I think I’ve got this front brake dialed in pretty close, it takes a healthy handful but it does the job.
I’ve been working on the jetting I’m at the top notch on the needle (leanest) and worked my way down to a 250 main. It’s still a bit rich but very rideable while I wait on the 240s.
God damn these forged pistons are loud when she’s cold!

This old girl just rips and is awesome fun! Seriously stupid fun!
Title: Re: My R5
Post by: 85RZwade on April 06, 2020, 04:07:51 PM
Just the way we like them
Title: Re: My R5
Post by: Jspooner on April 06, 2020, 06:55:21 PM
I think I’ve got this front brake dialed in pretty close, it takes a healthy handful but it does the job.
I’ve been working on the jetting I’m at the top notch on the needle (leanest) and worked my way down to a 250 main. It’s still a bit rich but very rideable while I wait on the 240s.
God damn these forged pistons are loud when she’s cold!

This old girl just rips and is awesome fun! Seriously stupid fun!


What needles and needle jets are you running? I can’t believe you are on the leanest needle position and it still a bit rich. That doesn’t seem right.
Title: Re: My R5
Post by: Czakky on April 06, 2020, 08:58:53 PM
I was thinking I was still rich on the mains, not sure about the middle. I’ve got 389-p8 needle jets, not sure about the needle I’ll have to look that up.

What makes you skeptic? Just curious...
Title: Re: My R5
Post by: Jspooner on April 06, 2020, 10:38:15 PM
I see you are running TM32s which I don’t know anything about but a P8 needle jet is huge. Also, I typically don’t like to have the needle clip all the way at the top or bottom just because it limits you on adjustability. I’m assuming chuck set them up initially so maybe that’s normal.
Title: Re: My R5
Post by: m in sc on April 07, 2020, 10:17:35 AM
i agree. p8 is crazy rich.
Title: Re: My R5
Post by: Czakky on April 07, 2020, 11:12:09 AM
What do guys with 34s run?
Title: Re: My R5
Post by: pdxjim on April 07, 2020, 04:34:21 PM
Looking good!

Need moar pics!
Title: Re: My R5
Post by: Czakky on April 08, 2020, 09:17:58 AM
Thanks Jim!
Title: Re: My R5
Post by: Czakky on April 08, 2020, 09:36:19 AM
After looking at the jetting poll I see what you guys mean by being rich on the needle jet! I will have to plug chop her mid throttle and send the results to Dr Supertune.
I have to say it seems to run good, then hits the powerband and takes off!
Title: Re: My R5
Post by: SUPERTUNE on April 14, 2020, 11:59:35 AM
I didn't have a baseline jetting package for this setup with the TM32's.
So have been remote tuning with Bill.
I found that 32's instead of 34's I run on the STG 2 400's is a big difference in main jets. I'm in the 290-310 range on stg 2 400's with the 34's and P8's & Q0's with 400's.

I did fine after lots of testing on 400's they always like the needle clip all the way lean on #1 or #2 only.
So going to send Bill some P6's and move the clip back to #2 and a 250 main and see where are are...getting very close. Just was afraid to go to lean in the mid for cruise with this HPI cdi right away with a fairly aggressive timing curve.
Chuck

Title: Re: My R5
Post by: Czakky on April 16, 2020, 07:42:52 PM
I’m sure this thread influenced me a bit but I told Chuck that it did run better cold in the mid throttle range. So Chuck sent me some p6’s in literally minutes, a few days later they are in and ready to rock. Man is it tight in there with these flat slides... not to mention my little shed with two other bikes... hope this is the right mixture.
Ride report tomorrow if it stays above 45.
Title: Re: My R5
Post by: Czakky on June 16, 2020, 08:41:52 PM
Alright long overdue update but in the meantime I did lose the little tension pin on the oil pump causing a seizure (sic?).

Here’s where I’m at
42.5 pilot (probably still rich)
P6 needle jet (I got a set of p4s coming still not sure if I want to try them)
Needle on the leanest position
240main

It can still at times go flat in 5th and 6th around 5500-6k rpm. The mid range is awesome otherwise. Top end, past 7k... It’s sooo addictive.

I also played with the timing a little on the HPI and tried to set the max advance to 24*. It ran like crap.

That’s where I’m at for now.
Title: Re: My R5
Post by: m in sc on June 17, 2020, 02:02:17 PM
might help to drop the pilot to a 40 or 37.5

Title: Re: My R5
Post by: Czakky on June 17, 2020, 07:58:07 PM
Yeah I think so too.
Title: Re: My R5
Post by: Czakky on August 04, 2020, 08:48:22 PM
Another very late update. I threw in the P4 needle jets (a while back) it helped slightly and I did a plug chop in the mid range during the hesitation. Way less hairy than a main jet chop on this thing.

I’m like real close to being satisfied.
I misspoke about my pilots I guess I’m at 40s 2-1/8 turns. It idles well when warm, would probably load up after a couple minutes but, I’m fine with it. I don’t sit in traffic.

The enricheners on these TMs suck. It won’t warm up with them for longer than 15secs and she won’t idle cold on her own. I just pretend its a highly specialized race bike with no idle circuit for the first five minutes....