Wilsons Sandbox

New version, old version KLR, the cooling system is relatively the same. A ThermoBob is a great add-on for those who ride in cooler climates / weather, since it gets your coolant temp (around the cylinder & head) up to the midpoint and holds it there. Your KLR cooling system will behave much like a car's system, once you install the ThermoBob. I'm in Pennsylvania, so we have 80-90 deg F summers and 20-30 deg F winters, at the normal extremes. During the summer, when lugging around in the woods or sitting in traffic, I can still begin to overwhelm to cooling system but it sort of hangs at about 75% of the range. I don't think the ThermoBob really increases the capacity of your system to cool during the summer. It is what it is. The ThermoBob shines at the cool / cold weather end, since it is designed to prevent 'over cooling' or 'shock-cooling' that occurs with the OEM setup. On a cool / cold day with a ThermoBob engine, the engine temp steadily climbs to about midpoint and holds there, all day long. In the past, while underway, the OEM thermostat would open up at the apprpriate temp and you could see the engine temp indicator dive to 20% of the range (saw-tooth graph if plotted out over the ride). That was due to the cold coolant from the radiator flooding the cylinder and head wih every thermostat opening. The cooler the weather, the more dramatic the temperature swings. I think that the ThermoBob holds the cylinder & head at a more consistent temperature in cool / cold weather, allows for consistent wear of those parts, and longer engine life. Time will tell. Don R100, A6F (x2)

--- In DSN_KLR650@yahoogroups.com, Kent Mosher wrote: > > Ok! one question. I have a 09 and everything is running great the only time I ever see the temp get up to mid range is when setting in rush hour stop and go and then not long, (you know that three blocks we have of rush hour traffic here in Fairbanks). My question is this ThermoBob everyone is talking about and I see on the site as to bypass the cooling system is that needed on the 09 or was that something before the 08 and the design changes took care of? > > Kent in Fairbanks >

#ygrps-yiv-1829887592 .ygrps-yiv-1829887592ygrp-photo-title { CLEAR:both;FONT-SIZE:smaller;OVERFLOW:hidden;WIDTH:75px;HEIGHT:15px;TEXT-ALIGN:center;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592ygrp-photo { BORDER-RIGHT:black 1px solid;BACKGROUND-POSITION:center 50%;BORDER-TOP:black 1px solid;BORDER-LEFT:black 1px solid;WIDTH:62px;BORDER-BOTTOM:black 1px solid;BACKGROUND-REPEAT:no-repeat;HEIGHT:62px;BACKGROUND-COLOR:white;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592photo-title A { TEXT-DECORATION:none;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592photo-title A:active { TEXT-DECORATION:none;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592photo-title A:hover { TEXT-DECORATION:none;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592photo-title A:visited { TEXT-DECORATION:none;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592attach-table DIV.ygrps-yiv-1829887592attach-row { CLEAR:both;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592attach-table DIV.ygrps-yiv-1829887592attach-row DIV { FLOAT:left;} #ygrps-yiv-1829887592 P { CLEAR:both;PADDING-RIGHT:0px;PADDING-LEFT:0px;PADDING-BOTTOM:3px;OVERFLOW:hidden;PADDING-TOP:15px;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592ygrp-file { WIDTH:30px;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592attach-table DIV.ygrps-yiv-1829887592attach-row DIV DIV A { TEXT-DECORATION:none;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592attach-table DIV.ygrps-yiv-1829887592attach-row DIV DIV SPAN { FONT-WEIGHT:normal;} #ygrps-yiv-1829887592 DIV.ygrps-yiv-1829887592ygrp-file-title { FONT-WEIGHT:bold;} #ygrps-yiv-1829887592 DIV { MARGIN:0px;} On Mon, 28 Jun 2010 16:55:12 -0700 (PDT) Luc Legrain writes:    I have been using the Fram oil filter for my A-19 and at every filter change I had the same problem that does not seem to be normal : when pulling the filter out, the paper has the same looks than a deep fried 'tater chip ,feels the same too ( NO I have not tasted it yet ....... ) and the paper is real crispy like , is this the norm for all paper filters ? the bike is not running hot I have  installed the ThermoBob .about 3 years ago . Ok not ok ? Switch brand ?   <><><><><><><> <><><><><><><>   Luc,   I'll suggest that is normal for your bike with the filters and oil and oil change interval you are using since it happens every time.  : )   But it wouldn't be normal for my bike using Emgo filters and Rotella 15w-40 dino oil with a 1,750 smile oil change interval.   Maybe change filters and see if things change.   I don't think the T-Bob has anything to do with this situation.   Best, Jeff Saline ABC # 4412  South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT   . ____________________________________________________________ Get Free Email with Video Mail & Video Chat!

#ygrps-yiv-1202705948 .ygrps-yiv-1202705948ygrp-photo-title { CLEAR:both;FONT-SIZE:smaller;OVERFLOW:hidden;WIDTH:75px;HEIGHT:15px;TEXT-ALIGN:center;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948ygrp-photo { BORDER-RIGHT:black 1px solid;BACKGROUND-POSITION:center 50%;BORDER-TOP:black 1px solid;BORDER-LEFT:black 1px solid;WIDTH:62px;BORDER-BOTTOM:black 1px solid;BACKGROUND-REPEAT:no-repeat;HEIGHT:62px;BACKGROUND-COLOR:white;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948photo-title A { TEXT-DECORATION:none;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948photo-title A:active { TEXT-DECORATION:none;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948photo-title A:hover { TEXT-DECORATION:none;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948photo-title A:visited { TEXT-DECORATION:none;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948attach-table DIV.ygrps-yiv-1202705948attach-row { CLEAR:both;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948attach-table DIV.ygrps-yiv-1202705948attach-row DIV { FLOAT:left;} #ygrps-yiv-1202705948 P { CLEAR:both;PADDING-RIGHT:0px;PADDING-LEFT:0px;PADDING-BOTTOM:3px;OVERFLOW:hidden;PADDING-TOP:15px;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948ygrp-file { WIDTH:30px;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948attach-table DIV.ygrps-yiv-1202705948attach-row DIV DIV A { TEXT-DECORATION:none;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948attach-table DIV.ygrps-yiv-1202705948attach-row DIV DIV SPAN { FONT-WEIGHT:normal;} #ygrps-yiv-1202705948 DIV.ygrps-yiv-1202705948ygrp-file-title { FONT-WEIGHT:bold;} #ygrps-yiv-1202705948 DIV { MARGIN:0px;} On Mon, 28 Jun 2010 17:18:31 -0700 (PDT) Kent Mosher writes:   Ok! one question. I have a 09 and everything is running great the only time I ever see the temp get up to mid range is when setting in rush hour stop and go and then not long, (you know that three blocks we have of rush hour traffic here in Fairbanks). My question is this  ThermoBob everyone is talking about and I see on the site as to bypass the cooling system is that needed on the 09 or was that something before the 08 and the design changes took care of?   Kent in Fairbanks <><><><><><> <><><><><><>   Kent,   The by-pass in the T-Bob allows coolant to circulate all the time.  In the stock system the coolant only flows in an appreciable amount when the stat is open.   So what you get with the stock system is coolant in the radiator getting very cool and the coolant in the cylinder and head getting warm with the stat closed.  When the coolant in the head gets hot enough the stat will finally open allowing the hot coolant to exit the cylinder and head and cool/cold coolant from the radiator to replace the hot coolant.  Depending on conditions this might happen every 20 seconds or so.  The temperature change in the cylinder coolant when this happens is about 80 degrees.   With the T-Bob coolant is circulating all the time in the coolant pump, cylinder, head and returning to follow the same path again.  When the stat gets warm enough (coolant is always passing over the stat bulb unlike the stock system where very little coolant passes over the stat bulb when the stat is closed) it will open and some coolant will flow to the radiator while some coolant (hot) will return to the coolant pump along with cool coolant from the radiator.  This keeps the coolant temperature fairly constant.  Depending on conditions the temp swing is about 12-15 degrees.   I think the version 2 bikes (08 and later) have a larger radiator so the temp swings would/could be even more pronounced.   When the ambient temp is warm/hot (maybe 75 degrees and above or so, I think) the stat in either system will tend to be open most of the time and cooling will be fully dependent on the ability of the radiator to remove heat from the coolant.   So in your area I'd say the T-Bob is well worth the cost and provides wonderful benefits to either version KLR.   I did a stat housing with by-pass with Bill's guidance/advice back in 2005/6 when he was first developing the T-Bob.  It makes a wonderful difference in my engine reaching and maintaining operating temperature in temps from about 70 degrees and below.  For temps above 70 degrees I added a second radiator to provide additional cooling.  Now I have the best of both worlds with constant operating temps in all temperatures.  Coldest I think I've ridden with my KLR is 5 degrees above 0 and warmest is almost 100 degrees.  I probably would have ridden in hotter temps but it hasn't been 100 in my local area in over 1,000 days.   Best, Jeff Saline ABC # 4412  South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT   . ____________________________________________________________ Get Free Email with Video Mail & Video Chat!