Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion
Sponsored by:
Sponsored by:

Finally got to ride my RGU M8

Thread Tools
 
Search this Thread
 
Old Feb 27, 2017 | 06:10 AM
  #21  
ardakota's Avatar
ardakota
Road Captain
Joined: Aug 2010
Posts: 616
Likes: 38
Default

Originally Posted by bradn
I have had it since November, the bad weather kept me off of it until today. Got up to 70 Degrees here in IA. Took the afternoon off and got 107 miles in!

The stage II is incredible! A little noise in the top end of the motor, but runs very smooth and pulls like a workhorse. Will likely quiet down with some miles. Picking up quite a bit of heat on the right ankle, but vents were closed on the lowers. Couldn't really open it up yet, but damn, I love this bike. I can't imagine a stage IV, and now I'm seeing posts on V!

Also, I put a Long Ride medium tint 13" shield on this winter. Man, huge difference over the stock. Not sure about the passenger, but wind noise is drastically reduced for the rider.
That is my only gripe with my RGU is the heat on my right heal is bad if i am flat footed on my board. It is a litte worse with the lowers shut at 35 degrees. but at 75 and them open its bad.
 
Reply
Old Feb 27, 2017 | 11:46 AM
  #22  
Phalanx06's Avatar
Phalanx06
Intermediate
Joined: Feb 2014
Posts: 47
Likes: 4
From: Baltimore
Default

Originally Posted by ardakota
That is my only gripe with my RGU is the heat on my right heal is bad if i am flat footed on my board. It is a litte worse with the lowers shut at 35 degrees. but at 75 and them open its bad.
Do you think the heat on the right heel/ankle is specifically from the cat or just the exhaust regardless? Was thinking of removing my cat if it's the culprit
 
Reply
Old Feb 27, 2017 | 01:11 PM
  #23  
QNman's Avatar
QNman
Seasoned HDF Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2015
Posts: 6,863
Likes: 3,727
From: St. Charles, MO
Default

Originally Posted by Phalanx06
Do you think the heat on the right heel/ankle is specifically from the cat or just the exhaust regardless? Was thinking of removing my cat if it's the culprit
Having just removed my cats from my 2016, I can say unequivocally - it's both. HOWEVER, the cats are the bulk of the heat. MUCH less noticeable with no cats and a tune.
 
Reply
Old Feb 27, 2017 | 01:56 PM
  #24  
ardakota's Avatar
ardakota
Road Captain
Joined: Aug 2010
Posts: 616
Likes: 38
Default

Originally Posted by Phalanx06
Do you think the heat on the right heel/ankle is specifically from the cat or just the exhaust regardless? Was thinking of removing my cat if it's the culprit
The cat is further back on the 17 I didnt notice the problem with my 14 when the cat was closer to my foot. its got to be with that pipe running right by the floor board.
 
Reply
Old Mar 2, 2017 | 08:20 PM
  #25  
Steve Cole's Avatar
Steve Cole
HD EFI Guru
15 Year Member
Top Answer: 1
Top Answer: 3
Top Answer: 5
Joined: Jan 2008
Posts: 4,462
Likes: 4,718
Default

The '17 touring's are a step in the right direction for lower felt heat but until we all get back to much warmer weather I think no one really knows how much better they are.
 
Reply
Old Mar 3, 2017 | 12:34 PM
  #26  
bradn's Avatar
bradn
Thread Starter
|
Road Master
Joined: Apr 2016
Posts: 1,205
Likes: 216
From: Davenport, IA
Default

Originally Posted by Steve Cole
The '17 touring's are a step in the right direction for lower felt heat but until we all get back to much warmer weather I think no one really knows how much better they are.
That's what I was thinking too. I'm taking mine down to Bike Week, so hopefully will have the nice weather to see just how hot it does get - especially at slower speeds.
 
Reply
Old Mar 3, 2017 | 08:28 PM
  #27  
Steve Cole's Avatar
Steve Cole
HD EFI Guru
15 Year Member
Top Answer: 1
Top Answer: 3
Top Answer: 5
Joined: Jan 2008
Posts: 4,462
Likes: 4,718
Default

Today was a nice day and got to take the '17 RG out for a little 300 mile ride. Weather was in the upper 70's and each time I came up to a stop the oil cooler fan was on and the engine EITMS came on. Mind you this happen just as I came off the interstate and I had been traveling between 70 - 75 mph for about an hour straight. Traveled down a back road through the mountains that had a speed limit of 55 mph and when you came into a town it dropped 35 - 40 mph. That road was 44 miles long and I travel through three towns along the way. Each and every time I slowed into a town if I missed a traffic light both the EITMS and oil cooler fan were on when I stopped.

So what does this mean, I do not know, but sure glad I added the oil cooler with fan because come summer time and the heat goes back up to its normal 80 - 100 degree IMHO your going to need it from what I saw today.

My route was I-5 north from LA to 99 north to Bakersfield. Turned around in Bakersfield and took 99 back to 5 and got off at Hwy 126 west. That's an old Hwy that runs through the mountains over to the coast. Took Hwy 1 back down the coast to LA.
 
Reply
Old Mar 3, 2017 | 09:01 PM
  #28  
mjwebb's Avatar
mjwebb
Seasoned HDF Member
15 Year Member
Photogenic
Community Builder
Top Answer: 1
Joined: Jan 2008
Posts: 13,619
Likes: 11,353
From: State of Confusion
Default

Originally Posted by Steve Cole
The '17 touring's are a step in the right direction for lower felt heat but until we all get back to much warmer weather I think no one really knows how much better they are.
I got to put 2000 miles on mine in Sept/Oct and we hit about 80 a couple times..my perception was I wasn't feeling quite as much heat at stops as my Rushmore King but let's face it..when we're back in the 80-100 weather I'm not disillusioned enough to forget I'm still basically sitting on an air cooled big v-twin engine...not expecting miracles, but better is better and my Twin Cams heat never seemed to bother me as much as many I guess..is what it is and I love riding these things
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Mar 4, 2017 | 10:44 AM
  #29  
Steve Cole's Avatar
Steve Cole
HD EFI Guru
15 Year Member
Top Answer: 1
Top Answer: 3
Top Answer: 5
Joined: Jan 2008
Posts: 4,462
Likes: 4,718
Default

The only time my '14 ever bother me was when stuck in bumper to bumper LA traffic, so once summer comes around I will be able to tell better about the '17. While I do not expect a whole lot, as you said better is better and I do not mind spending a few $$$ to help it out. Hell I've still got to many of these things as I cannot seem to sell the old ones. Currently own 2002 Vrod, 2011 RG, 2012 Dyna, 2014 Limited, 2017 RK and 2017 Limited. Still ride them all.
 
Reply
Old Mar 4, 2017 | 10:52 AM
  #30  
lp's Avatar
lp
Seasoned HDF Member
20 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2006
Posts: 11,467
Likes: 2,996
From: Charleston, SC
Default

Originally Posted by Steve Cole
Today was a nice day and got to take the '17 RG out for a little 300 mile ride. Weather was in the upper 70's and each time I came up to a stop the oil cooler fan was on and the engine EITMS came on. Mind you this happen just as I came off the interstate and I had been traveling between 70 - 75 mph for about an hour straight. Traveled down a back road through the mountains that had a speed limit of 55 mph and when you came into a town it dropped 35 - 40 mph. That road was 44 miles long and I travel through three towns along the way. Each and every time I slowed into a town if I missed a traffic light both the EITMS and oil cooler fan were on when I stopped.

So what does this mean, I do not know, but sure glad I added the oil cooler with fan because come summer time and the heat goes back up to its normal 80 - 100 degree IMHO your going to need it from what I saw today.
I'm not certain your conditions correlate directly to "need" as the fans are going to come on anyway - like always.
Apparently as found out by someone else, the fans turn on at 220 head temp so if you run the bike at all, they will always come on. EITMS, basically the same thing.

That said, every little bit helps and I think the fan will be a welcome addition and perhaps the additives in your oil will last longer extending oil life.
The engine itself probably doesn't need it or care. It's designed to handle high oil temps; although, engines do run better not all heat soaked (timing pulled) so a higher performance effect may also be experienced.
And maybe, just maybe, the seat will feel a few degrees cooler.
Would love to see some data on that. Love that feature in my twin-cooled.
 

Last edited by lp; Mar 4, 2017 at 10:54 AM.
Reply



All times are GMT -5. The time now is 04:26 PM.

story-0
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-1
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-2
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-3
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-4
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-5
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-6
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE