layout of the R-21 (not ec)

S

SlackwaterJack

Well-known member
Joined
Aug 15, 2009
Messages
397
Fluid Motion Model
C-24 C (Sterndrive)
Vessel Name
Slackwater Jack (2005)
Does anyone have an acurate scale line drawing for the layout of the later model (pre.EC) R-21?. pilothouse and add a bit to the engine box ... I guess I could just chop 18" from the EC's drawing....but I'm sure it's a bit more complex than that.
I'd settle for an accurate discription of the differences in the two (other than "one has a bigger pilothouse" )

Thanks,
 
Talking about poor timing, Monday of this week I cleaned out my tug folder and threw away a number of accurate dimensioned drawings that I had made of my (just sold R-21, last one built prior to the EC). I had made the drawing because I was always thinking of things that could be done to make it better for my use. Could never address the speed issue so I sold the tug. Un fortunately I was never on an EC so can not describe the differences. Marc at Wefings had a number of detailed pictures that he used in the Boattrader ad and that he sent to the new owners. If he has a file of these photos it might be possible to e-mail it to you and you could make your own visual comparisons. I am not good at typing so will not go into discussion here. I would be glad to discuss them with you if you want to call me. Cell (256) 318-4608.
Ron
 
Ron,

We would have loved to have those drawings!! Gave her a bath from top to bottom last night - if the weather would cooperate - we want to give her a waxing too.

Moria
 
It is ashame the specs are not available to download from that page. We just bought Ron's R-21 and it is hard to find info on the older models.

Moria
 
My understanding is JL redesigned the hull on the R-21 providing a 50% increase in speed. Under good conditions my EC will do 9.5 knots. If the 50% increase is correct, then max speed on the tugs prior to the redesign was 6.3 knots. I've owned a number of sailboats that didn't do 6.3 knots. In theory, it takes a waterline of 22 feet to get 6.3 knots from a displacement hull. Obviously, both models are pushing a lot of water to get max speed. I wonder if the EC is a semi-displacement design?

I don't know when that redesign took place, but have the impression it might have been with EC.

I haven't seen one of the pre-ECs, so I can't comment from personal observations on the layout changes. The photos I've seen lead me to think the basic accommodations layout is the same, just tighter. The systems have had changes. I've seen differences in the systems in the ECs, so you know there are changes in the other models.

Gene
 
Moria, I almost called to see if you all wanted the drawings but decided that you probably would not since they were hand drawn on large block graph paper I made. I had made a curtain for the cockpit to move a potti into at night. My drawings were made because I had made one solid side with a sliding door. I was going to enclose the cockpit back about half way on the engine box. I did not complete the sides and never drilled to mount the one built. I modified the sliding curtain and now use it in my C-Dory cockpit.
In response to the hull change. I do not know the actual change to get from displacment to where it is called semi displacment but the rear area of the hull was just flattened out to give a little lift. I was told at the factory that they actually used a section of a plywood sheet on a displacment hull to just see if it gave some lift as data would have shown it would. The change was successful to add the speed increase and was started as the change was made to go EC. I found that it was a major fuel burn increase to try for more speed when the slight increase did not get you anywhere that much sooner. These boats are not for getting anywhere fast but it was great to burn about 1/3 gph and worry about the fuel going bad instead of useing it so fast. Great little boats and so much fun to cruise in.
Ron
 
Hi

I placed a set of line drawings in my TugNuts Gallery. Both are of the R-21ec taken from the ranger factory brochure but I altered one to reflect what I think is close to the Older standard pilothouse layout.; e.g. Longer engine cover box, no molded steps into the cockpit, etc....
Could those of you that have or are familiar with the R-21 standard version let me know if I'm close or how to make it more acurate?

Thanks,
 
The line drawing of the R-21 looks good in your album. The only things that I see to change are, 1) the cabinets on the sides in the pilothouse were deeper and extended into the pilothouse a little more and 2) the porta-pottie was not in the v-berth area under the wheel but was stored in the starboard cabinet. the v-berth cushion was not notched in but extended straight across.
Ron
 
ron cowan":3gcofafh said:
The line drawing of the R-21 looks good in your album. The only things that I see to change are, 1) the cabinets on the sides in the pilothouse were deeper and extended into the pilothouse a little more and 2) the porta-pottie was not in the v-berth area under the wheel but was stored in the starboard cabinet. the v-berth cushion was not notched in but extended straight across.
Ron
Click to expand...

Thanks Ron,
I've made some changes, does that look a bit closer?
Any additional comments are appreciated.
 
I feel like I am splitting hairs but you are so close now. The cabinets are not quite that deep and both were straight forward on the front without the notch back. The porta-pottie was a small unit which may be what forced your cabinet quite so deep. The starboard cabinet was not quite out to the door opening. I think the port cabinet was the same depth as the starboard but could have been a couple of inches less depth.
Good job on showing a great little boat.
Ron
 
ron cowan":39t1dqwe said:
I feel like I am splitting hairs but you are so close now. The cabinets are not quite that deep and both were straight forward on the front without the notch back. The porta-pottie was a small unit which may be what forced your cabinet quite so deep. The starboard cabinet was not quite out to the door opening. I think the port cabinet was the same depth as the starboard but could have been a couple of inches less depth.
Good job on showing a great little boat.
Ron
Click to expand...



Thanks Ron.
This more like it?....
 
Looks good to me. Good luck with Tug activity.
Ron
 
You must log in or register to reply here.

  • Tugnuts.com is the community hub for Ranger Tug, Cutwater, and Solara owners. Since its inception in 2008, the Tugnuts forum has grown into an active and thriving community of more than 9,000 members. It serves as both a meeting place for the best boating community online, and an invaluable archive of information.

  • User menu
Back
Top