KHR flywheels

Racing K Models

KHR flywheels

Postby Simon » Fri Jun 03, 2016 3:26 am

Hi everyone,

Here are some shots of KHR flywheels to help with identification. Don't often see these come up - these are currently intended for my XLR, can't let Patrick have all the fun!

Image

Image
Simon
 
Posts: 156
Joined: Mon Oct 12, 2015 10:14 pm

Re: KHR flywheels

Postby thefrenchowl » Fri Jun 03, 2016 9:53 am

Yes, Simon,

I have KHR flywheels in the XLRTT... ; 0)

Patrick
Flat Head Forever
https://web.archive.org/web/20071011184353/http://www.harleykrxlrtt.com/index.htm
I'm the one who has to die when it's time for me to die so let me live my life the way I want to...
thefrenchowl
 
Posts: 547
Joined: Sun Jun 28, 2015 4:33 pm

Re: KHR flywheels

Postby depthsounder » Tue Jun 11, 2019 3:25 pm

From what I can tell through the timing hole, I have these flywheels in my 45" flathead WL motor (1963 cases, 1947 WR cylinders). Every detail matches: the extra holes near the pin, the thickness of the rim, style of timing marks.

Is this physically possible and if so, what are the advantages / disadvantages of this configuration?

Regards,
David
depthsounder
 
Posts: 2
Joined: Mon Jun 10, 2019 10:22 am

Re: KHR flywheels

Postby Simon » Wed Jun 12, 2019 1:20 am

Are there stroker plates under the cylinders? The KHR would up the stroke to 4 9/16".
Simon
 
Posts: 156
Joined: Mon Oct 12, 2015 10:14 pm

Re: KHR flywheels

Postby depthsounder » Wed Jun 12, 2019 8:31 am

There are no stroker plates. Does this summarily exclude the possibility of these being KHR flywheels? I have not and would like to avoid seeing the pistons, as the bike runs reasonably well. It takes quite a bit more enrichment than the baseline Linkert setup on the high speed adjustment, which may give an indication of increased displacement. I have an 0.063" jet on a 1-1/2" M61B and find I need more than 2 turns open on the high speed needle.

I can't find any pictures of other flywheels with the same distinguishing features: thin rim which expands into the counterweight portion without a step and the extra holes near the pin.

Attached is a picture of the WR flywheels, which are the one that are "supposed" to be in this engine. The obvious differences are the step in the rim at the counterweight area and the lack of extra holes near the pin.
received_615259855639361.jpeg
received_615259855639361.jpeg (133.72 KiB) Viewed 1080 times
depthsounder
 
Posts: 2
Joined: Mon Jun 10, 2019 10:22 am

Re: KHR flywheels

Postby 55panman » Wed Jun 12, 2019 9:39 am

One old cheater trick is to use XR 1000 rods on the wheels. They were shorter and eliminated the need for stoker plates. I can't remember off hand what stroke they worked the best with, but I know back years ago there were a couple a vintage bikes running the Davenport race with stroker wheels and no stroker plates.
55panman
 
Posts: 137
Joined: Wed Oct 28, 2015 4:16 pm

Re: KHR flywheels

Postby Ferrous_Head » Wed Jun 12, 2019 4:20 pm

Stroker pistons are readily available for XL's now that does away with the need for stroker plates. By simply moving the pin location upwards in the piston they can handle the extra stroke. I have a set of Dytch cylinders that came with two rings stroker pistons that probably were custom made.
"I know only too well the evil that I propose, but my inclinations get the better of me."
User avatar
Ferrous_Head
 
Posts: 190
Joined: Tue Jun 06, 2017 5:36 pm
Location: Australia

Re: KHR flywheels

Postby 55panman » Wed Jun 12, 2019 6:59 pm

Yeah, but I'm talking about WR's and KR's running with S&S stroker cranks. They use XR 1000 rods cause they're shorter and they don't have to use plates and no one can see that they're cheating with big engines.
55panman
 
Posts: 137
Joined: Wed Oct 28, 2015 4:16 pm

Re: KHR flywheels

Postby Ferrous_Head » Wed Jun 12, 2019 7:38 pm

Without measuring it's impossible to tell my big bore stroker is a big bore stroker.
The cylinders LOOK stock. No plates, no welding on the cases. It's about 74CID.
It was built long before the XR1000. Stock length K rods.
"I know only too well the evil that I propose, but my inclinations get the better of me."
User avatar
Ferrous_Head
 
Posts: 190
Joined: Tue Jun 06, 2017 5:36 pm
Location: Australia


Return to KR, KRM, KRTT, KHR, KHRM, KHRTT

Who is online

Users browsing this forum: No registered users and 2 guests

cron